From 77adda52ef7bcdb5edc9b4dc1678c83f31a02f46 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:34 +0100 Subject: pckbd: move KBDState from pckbd.c to i8042.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows the QOM types in pckbd.c to be used elsewhere by simply including i8042.h. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé Acked-by: Helge Deller Message-Id: <20220624134109.881989-20-mark.cave-ayland@ilande.co.uk> --- include/hw/input/i8042.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/hw/input/i8042.h') diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index e070f546e4..84b5aa7f23 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -11,6 +11,31 @@ #include "hw/isa/isa.h" #include "qom/object.h" +typedef struct KBDState { + uint8_t write_cmd; /* if non zero, write data to port 60 is expected */ + uint8_t status; + uint8_t mode; + uint8_t outport; + uint32_t migration_flags; + uint32_t obsrc; + bool outport_present; + bool extended_state; + bool extended_state_loaded; + /* Bitmask of devices with data available. */ + uint8_t pending; + uint8_t obdata; + uint8_t cbdata; + uint8_t pending_tmp; + void *kbd; + void *mouse; + QEMUTimer *throttle_timer; + + qemu_irq irq_kbd; + qemu_irq irq_mouse; + qemu_irq a20_out; + hwaddr mask; +} KBDState; + #define TYPE_I8042 "i8042" OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042) -- cgit 1.4.1 From c9849a71b997a3b96757b19642b5b9a56c2ccb75 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:35 +0100 Subject: pckbd: move ISAKBDState from pckbd.c to i8042.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows the QOM types in pckbd.c to be used elsewhere by simply including i8042.h. Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé Acked-by: Helge Deller Message-Id: <20220624134109.881989-21-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 10 ---------- include/hw/input/i8042.h | 10 ++++++++++ 2 files changed, 10 insertions(+), 10 deletions(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index 7b14cd007e..f99e10cfcf 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -686,16 +686,6 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, qemu_register_reset(kbd_reset, s); } -struct ISAKBDState { - ISADevice parent_obj; - - KBDState kbd; - bool kbd_throttle; - MemoryRegion io[2]; - uint8_t kbd_irq; - uint8_t mouse_irq; -}; - void i8042_isa_mouse_fake_event(ISAKBDState *isa) { KBDState *s = &isa->kbd; diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index 84b5aa7f23..a246250d1f 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -39,6 +39,16 @@ typedef struct KBDState { #define TYPE_I8042 "i8042" OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042) +struct ISAKBDState { + ISADevice parent_obj; + + KBDState kbd; + bool kbd_throttle; + MemoryRegion io[2]; + uint8_t kbd_irq; + uint8_t mouse_irq; +}; + #define I8042_A20_LINE "a20" -- cgit 1.4.1 From 150ee013ed3f2af7eec493cd68ae774a85d40a2b Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:36 +0100 Subject: pckbd: introduce new I8042_MMIO QOM type Currently i8042_mm_init() creates a new KBDState directly which is used by the MIPS magnum machine. Introduce a new I8042_MMIO QOM type that will soon be used to allow the MIPS magnum machine to be wired up using standard qdev GPIOs. Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-22-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 22 +++++++++++++++++++++- include/hw/input/i8042.h | 10 ++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index f99e10cfcf..89a41ed566 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -665,11 +665,23 @@ static const MemoryRegionOps i8042_mmio_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; +static void i8042_mmio_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_INPUT, dc->categories); +} + void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, MemoryRegion *region, ram_addr_t size, hwaddr mask) { - KBDState *s = g_new0(KBDState, 1); + DeviceState *dev; + KBDState *s; + + dev = qdev_new(TYPE_I8042_MMIO); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + s = &I8042_MMIO(dev)->kbd; s->irq_kbd = kbd_irq; s->irq_mouse = mouse_irq; @@ -686,6 +698,13 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, qemu_register_reset(kbd_reset, s); } +static const TypeInfo i8042_mmio_info = { + .name = TYPE_I8042_MMIO, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(MMIOKBDState), + .class_init = i8042_mmio_class_init +}; + void i8042_isa_mouse_fake_event(ISAKBDState *isa) { KBDState *s = &isa->kbd; @@ -841,6 +860,7 @@ static const TypeInfo i8042_info = { static void i8042_register_types(void) { type_register_static(&i8042_info); + type_register_static(&i8042_mmio_info); } type_init(i8042_register_types) diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index a246250d1f..b7df9ace6e 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -9,6 +9,7 @@ #define HW_INPUT_I8042_H #include "hw/isa/isa.h" +#include "hw/sysbus.h" #include "qom/object.h" typedef struct KBDState { @@ -49,6 +50,15 @@ struct ISAKBDState { uint8_t mouse_irq; }; +#define TYPE_I8042_MMIO "i8042-mmio" +OBJECT_DECLARE_SIMPLE_TYPE(MMIOKBDState, I8042_MMIO) + +struct MMIOKBDState { + SysBusDevice parent_obj; + + KBDState kbd; +}; + #define I8042_A20_LINE "a20" -- cgit 1.4.1 From 7b9fff290c20ee65c5deba0ad98f97529061d231 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:39 +0100 Subject: pckbd: add size qdev property to I8042_MMIO device This will soon be used to set the size of the register memory region using a qdev property. Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-25-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 2 ++ include/hw/input/i8042.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index c04a2c587e..a70442e0f8 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -675,6 +675,7 @@ static void i8042_mmio_reset(DeviceState *dev) static Property i8042_mmio_properties[] = { DEFINE_PROP_UINT64("mask", MMIOKBDState, kbd.mask, UINT64_MAX), + DEFINE_PROP_UINT32("size", MMIOKBDState, size, -1), DEFINE_PROP_END_OF_LIST(), }; @@ -696,6 +697,7 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, dev = qdev_new(TYPE_I8042_MMIO); qdev_prop_set_uint64(dev, "mask", mask); + qdev_prop_set_uint32(dev, "size", size); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); s = &I8042_MMIO(dev)->kbd; diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index b7df9ace6e..ac4098b957 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -57,6 +57,7 @@ struct MMIOKBDState { SysBusDevice parent_obj; KBDState kbd; + uint32_t size; }; #define I8042_A20_LINE "a20" -- cgit 1.4.1 From f4de68d1d45f1f104535a82f3e0dd3c393c6539e Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:40 +0100 Subject: pckbd: implement i8042_mmio_realize() function Move the initialisation of the register memory region to the I8042_MMIO device realize function and expose it using sysbus_init_mmio(). Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-26-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 14 +++++++++++++- include/hw/input/i8042.h | 1 + 2 files changed, 14 insertions(+), 1 deletion(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index a70442e0f8..bc51f7eedd 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -673,6 +673,17 @@ static void i8042_mmio_reset(DeviceState *dev) kbd_reset(ks); } +static void i8042_mmio_realize(DeviceState *dev, Error **errp) +{ + MMIOKBDState *s = I8042_MMIO(dev); + KBDState *ks = &s->kbd; + + memory_region_init_io(&s->region, OBJECT(dev), &i8042_mmio_ops, ks, + "i8042", s->size); + + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->region); +} + static Property i8042_mmio_properties[] = { DEFINE_PROP_UINT64("mask", MMIOKBDState, kbd.mask, UINT64_MAX), DEFINE_PROP_UINT32("size", MMIOKBDState, size, -1), @@ -683,6 +694,7 @@ static void i8042_mmio_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); + dc->realize = i8042_mmio_realize; dc->reset = i8042_mmio_reset; device_class_set_props(dc, i8042_mmio_properties); set_bit(DEVICE_CATEGORY_INPUT, dc->categories); @@ -708,7 +720,7 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, vmstate_register(NULL, 0, &vmstate_kbd, s); - memory_region_init_io(region, NULL, &i8042_mmio_ops, s, "i8042", size); + region = &I8042_MMIO(dev)->region; s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s); s->mouse = ps2_mouse_init(kbd_update_aux_irq, s); diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index ac4098b957..59d695a9dd 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -58,6 +58,7 @@ struct MMIOKBDState { KBDState kbd; uint32_t size; + MemoryRegion region; }; #define I8042_A20_LINE "a20" -- cgit 1.4.1 From 903dd0e49b5140df55d6f77f97c741f99346c23e Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:42 +0100 Subject: pckbd: alter i8042_mm_init() to return a I8042_MMIO device This exposes the I8042_MMIO device to the caller to allow the register memory region to be mapped outside of i8042_mm_init(). Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-28-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 8 +++++--- include/hw/input/i8042.h | 6 +++--- 2 files changed, 8 insertions(+), 6 deletions(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index b8623d2f9a..702dab056c 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -708,9 +708,9 @@ static void i8042_mmio_class_init(ObjectClass *klass, void *data) set_bit(DEVICE_CATEGORY_INPUT, dc->categories); } -void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, - MemoryRegion *region, ram_addr_t size, - hwaddr mask) +MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, + MemoryRegion *region, ram_addr_t size, + hwaddr mask) { DeviceState *dev; KBDState *s; @@ -730,6 +730,8 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s); s->mouse = ps2_mouse_init(kbd_update_aux_irq, s); + + return I8042_MMIO(dev); } static const TypeInfo i8042_mmio_info = { diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index 59d695a9dd..d05cd33e3c 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -64,9 +64,9 @@ struct MMIOKBDState { #define I8042_A20_LINE "a20" -void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, - MemoryRegion *region, ram_addr_t size, - hwaddr mask); +MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, + MemoryRegion *region, ram_addr_t size, + hwaddr mask); void i8042_isa_mouse_fake_event(ISAKBDState *isa); void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out); -- cgit 1.4.1 From 01d924dce88f6d43a0be36c0e626f058e68a9ea4 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:43 +0100 Subject: pckbd: move mapping of I8042_MMIO registers to MIPS magnum machine Now that the register memory region is exposed as a SysBus memory region, move the mapping of the I8042_MMIO registers from i8042_mm_init() to the MIPS magnum machine (which is its only user). Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-29-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 5 +---- hw/mips/jazz.c | 11 +++++++---- include/hw/input/i8042.h | 3 +-- 3 files changed, 9 insertions(+), 10 deletions(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index 702dab056c..8708595eed 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -709,8 +709,7 @@ static void i8042_mmio_class_init(ObjectClass *klass, void *data) } MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, - MemoryRegion *region, ram_addr_t size, - hwaddr mask) + ram_addr_t size, hwaddr mask) { DeviceState *dev; KBDState *s; @@ -726,8 +725,6 @@ MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, vmstate_register(NULL, 0, &vmstate_kbd, s); - region = &I8042_MMIO(dev)->region; - s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s); s->mouse = ps2_mouse_init(kbd_update_aux_irq, s); diff --git a/hw/mips/jazz.c b/hw/mips/jazz.c index 96dc6ab32d..1eb8bd5018 100644 --- a/hw/mips/jazz.c +++ b/hw/mips/jazz.c @@ -136,11 +136,11 @@ static void mips_jazz_init(MachineState *machine, MemoryRegion *isa_mem = g_new(MemoryRegion, 1); MemoryRegion *isa_io = g_new(MemoryRegion, 1); MemoryRegion *rtc = g_new(MemoryRegion, 1); - MemoryRegion *i8042 = g_new(MemoryRegion, 1); MemoryRegion *dma_dummy = g_new(MemoryRegion, 1); MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1); NICInfo *nd; DeviceState *dev, *rc4030; + MMIOKBDState *i8042; SysBusDevice *sysbus; ISABus *isa_bus; ISADevice *pit; @@ -361,9 +361,12 @@ static void mips_jazz_init(MachineState *machine, memory_region_add_subregion(address_space, 0x80004000, rtc); /* Keyboard (i8042) */ - i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7), - i8042, 0x1000, 0x1); - memory_region_add_subregion(address_space, 0x80005000, i8042); + i8042 = i8042_mm_init(qdev_get_gpio_in(rc4030, 6), + qdev_get_gpio_in(rc4030, 7), + 0x1000, 0x1); + memory_region_add_subregion(address_space, 0x80005000, + sysbus_mmio_get_region(SYS_BUS_DEVICE(i8042), + 0)); /* Serial ports */ serial_mm_init(address_space, 0x80006000, 0, diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index d05cd33e3c..9d1f8af964 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -65,8 +65,7 @@ struct MMIOKBDState { MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, - MemoryRegion *region, ram_addr_t size, - hwaddr mask); + ram_addr_t size, hwaddr mask); void i8042_isa_mouse_fake_event(ISAKBDState *isa); void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out); -- cgit 1.4.1 From c2b1747973d1ff334787d9701cf8214e24fe0798 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:40:50 +0100 Subject: pckbd: replace irq_kbd and irq_mouse with qemu_irq array in KBDState This allows both IRQs to be declared as a single qdev gpio array. Signed-off-by: Mark Cave-Ayland Acked-by: Helge Deller Reviewed-by: Peter Maydell Message-Id: <20220624134109.881989-36-mark.cave-ayland@ilande.co.uk> --- hw/input/pckbd.c | 12 ++++++------ include/hw/input/i8042.h | 6 ++++-- 2 files changed, 10 insertions(+), 8 deletions(-) (limited to 'include/hw/input/i8042.h') diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c index 72843f770e..5d7c969fc6 100644 --- a/hw/input/pckbd.c +++ b/hw/input/pckbd.c @@ -170,8 +170,8 @@ static void kbd_update_irq_lines(KBDState *s) } } } - qemu_set_irq(s->irq_kbd, irq_kbd_level); - qemu_set_irq(s->irq_mouse, irq_mouse_level); + qemu_set_irq(s->irqs[I8042_KBD_IRQ], irq_kbd_level); + qemu_set_irq(s->irqs[I8042_MOUSE_IRQ], irq_mouse_level); } static void kbd_deassert_irq(KBDState *s) @@ -726,8 +726,8 @@ MMIOKBDState *i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq, sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); s = &I8042_MMIO(dev)->kbd; - s->irq_kbd = kbd_irq; - s->irq_mouse = mouse_irq; + s->irqs[I8042_KBD_IRQ] = kbd_irq; + s->irqs[I8042_MOUSE_IRQ] = mouse_irq; return I8042_MMIO(dev); } @@ -813,8 +813,8 @@ static void i8042_realizefn(DeviceState *dev, Error **errp) return; } - s->irq_kbd = isa_get_irq(isadev, isa_s->kbd_irq); - s->irq_mouse = isa_get_irq(isadev, isa_s->mouse_irq); + s->irqs[I8042_KBD_IRQ] = isa_get_irq(isadev, isa_s->kbd_irq); + s->irqs[I8042_MOUSE_IRQ] = isa_get_irq(isadev, isa_s->mouse_irq); isa_register_ioport(isadev, isa_s->io + 0, 0x60); isa_register_ioport(isadev, isa_s->io + 1, 0x64); diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index 9d1f8af964..4ba2664377 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -12,6 +12,9 @@ #include "hw/sysbus.h" #include "qom/object.h" +#define I8042_KBD_IRQ 0 +#define I8042_MOUSE_IRQ 1 + typedef struct KBDState { uint8_t write_cmd; /* if non zero, write data to port 60 is expected */ uint8_t status; @@ -31,8 +34,7 @@ typedef struct KBDState { void *mouse; QEMUTimer *throttle_timer; - qemu_irq irq_kbd; - qemu_irq irq_mouse; + qemu_irq irqs[2]; qemu_irq a20_out; hwaddr mask; } KBDState; -- cgit 1.4.1 From 57de3c1d35605f3f29c332585d9c4b49503d6639 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:41:05 +0100 Subject: pckbd: add QEMU interface comment for I8042_MMIO device This describes the I8042_MMIO device interface implemented within QEMU. Signed-off-by: Mark Cave-Ayland Message-Id: <20220624134109.881989-51-mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell --- include/hw/input/i8042.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/hw/input/i8042.h') diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index 4ba2664377..d4747b62b8 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -52,6 +52,17 @@ struct ISAKBDState { uint8_t mouse_irq; }; +/* + * QEMU interface: + * + sysbus MMIO region 0: MemoryRegion defining the command/status/data + * registers (access determined by mask property and access type) + * + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2 + * keyboard device has asserted its irq + * + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2 + * mouse device has asserted its irq + * + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1) + */ + #define TYPE_I8042_MMIO "i8042-mmio" OBJECT_DECLARE_SIMPLE_TYPE(MMIOKBDState, I8042_MMIO) -- cgit 1.4.1 From 38f426b8af844c8243b1cd5e6d883c176c527c3b Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Jun 2022 14:41:08 +0100 Subject: pckbd: add QEMU interface comment for I8042 device This describes the I8042 device interface implemented within QEMU. Signed-off-by: Mark Cave-Ayland Message-Id: <20220624134109.881989-54-mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell --- include/hw/input/i8042.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/hw/input/i8042.h') diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h index d4747b62b8..ca933d8e1b 100644 --- a/include/hw/input/i8042.h +++ b/include/hw/input/i8042.h @@ -39,6 +39,16 @@ typedef struct KBDState { hwaddr mask; } KBDState; +/* + * QEMU interface: + * + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2 + * keyboard device has asserted its irq + * + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2 + * mouse device has asserted its irq + * + Named GPIO output "a20": A20 line for x86 PCs + * + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1) + */ + #define TYPE_I8042 "i8042" OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042) -- cgit 1.4.1